Year	Number of Firms
1992-01-01	58
1997-01-01	127
2002-01-01	194
2003-01-01	223
2004-01-01	272
2005-01-01	303
2006-01-01	310
2007-01-01	391
2008-01-01	410
2009-01-01	450
2010-01-01	486
2011-01-01	485
2012-01-01	504
2013-01-01	484
2014-01-01	540
2015-01-01	522
2016-01-01	520